The Long Earth
by Stephen Baxter and Terry Pratchett
This is an interesting science fiction work that explores the concept of a multi-verse. It is the first of a series. Joshua is a dimensional stepping savant discovered during ‘The Event’ living in an orphanage. He grows up to turn into a kind of loner merc, hiring out to escort ventures into newly discovered editions of Earth.
This work has ~elves, ~trolls, dinos and other things that exist on other Earths which evolved just slightly different. Quite the adventure and quite original. Four out of five for construction and story addict-ability.